Bulb lamp



FIG. 1 is a front view of a bulb lamp showing my new design;

FIG. 2 is a back elevation view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a use status diagram thereof; and,

FIG. 8 is another use status diagram thereof.

The broken lines in the drawing depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a bulb lamp, as shown and described. 